Couple Ideas

Forward pay on tab;
I think it would be a good idea to make it easy to pay extra onto my tab. Some months I have a little extra cash and I could put 10-20$ extra towards paying off my tab.

Long-distance;
I do a lot of travelling and I find it hard to find information on charges outside of Canada. And I've never been able to find services that could let me pre-buy a set number of text messages. If I was going on vacation and I could buy 200 extra texts for the country I was visiting that would be awesome!